OpenStack Neutron Race Condition vulnerability
A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2017-7543US | medium5.9 | — | ||
A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overc… | ||||
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references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2017:2447WEB
- https://access.redhat.com/errata/RHSA-2017:2448WEB
- https://access.redhat.com/errata/RHSA-2017:2449WEB
- https://access.redhat.com/errata/RHSA-2017:2450WEB
- https://access.redhat.com/errata/RHSA-2017:2451WEB
- https://access.redhat.com/errata/RHSA-2017:2452WEB
- https://access.redhat.com/security/cve/CVE-2017-7543WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=1473792WEB
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